Outlawthing

iTrader: (3)

Putting a 6.0 together and I ran across something I wanna share at least to see what you guys think I ordered parts from summit wanted to use Clevite bearings but they only had king in stock so I gave them a go when I installed cam bearings cam was tight and wouldn’t turn well it’s a 2.346 1/5 block I mic’ed journals and bearings pre installation tried two cams same result so I removed them and got a set of durabond bearings installed and no issue cams turn fine I have king main and rod bearings too got me a little gun shy on them now as I have never used. I figured it’s just the corona ( beer ) not virus ) getting too me

Che70velle

iTrader: (6)

Usually this is a cam bearing that’s not square in the bore. You get one ever-so-slightly cocked and the cam won’t turn. It’s also easy to put a cam bearing in the wrong spot. As you know, the order of placement matters. OD of bearings and ID of bearing journals are different in 3 of the 5 journals.
Of course you could have got a set of bearings that were built wrong. I have also seen the bearings be out of order in the box, so it’s important to measure the bearings as you pull them out of the box to verify where they are supposed to go.
If indeed you got a set of bearings that were just too tight (ID) I don’t see how you could even get the camshaft in the block. Maybe just me, but through the years, almost every time I ran into an issue that pointed to a manufacturer or a vendor messing something up, it usually ended up being installer (me) error.

Outlawthing

iTrader: (3)

I did double check bearing numbers and spots for 1/5 2/4 and 3 now I can see it not being perfectly straight I am human I am building it in garage after all I have the summit cam bearing tool for ls engines only which is worth every penny IMO now i can’t say the same thing about the operator lol so if you have this problem and assume it to be a bearing that isn’t correctly positioned in journal would it be a deafening practice to remove and reinstall or better off using new bearing? If you remove and reinstall then retest cam and it spins freely is is safe to run the **** out of it !?

Che70velle

iTrader: (6)

Absolutely. It’s pretty common to have to mess with one or two of them after install to get them perfect. The trick is finding the one...or two maybe...that’s not square. Use a camshaft that you know is true. Not all of them are. Put a few drops of oil on your fingers and lube each bearing. Gently, slowly work the cam in. Stop at each bearing and turn it over....it should turn extremely easy. If you come to the next bearing and it’s tight, you know that’s the one. Sometimes if it’s the second or third bearing, from the front or rear, doesn’t matter, you can work the camshaft around in a circular motion...with a little force...to manipulate the bearing into place. I’ve done it countless times. But sometimes you have to break the tool back out and start over with them. Make sure backs of bearings are dry and journals of block are as well. No oil on install.

Country1982...

did you say no oil on install? Why is this I have a post on here where I dammaged the bearing on installing folded the lip up is it because i oiled it?

G Atsma

You might have been trying to put the wrong bearing in that position.

Country1982...

no it's correct for that position wich is position 5 I got the bearing in but the tool i was using dammaged even the old bearings i removed from the engine

Che70velle

iTrader: (6)

Install them dry. Oil behind the bearings is a no-no, and often will end up with a spun bearing. Same with rods and mains. I saw your other post, and I’m not sure why the lip is rolling up. That’s not oil related.